Warm-air furnace



J. P. KOLLA WARM AIR FURNACE Filed Oct. 24, 192'? Oct. 23, 1928.

v 11v VENTOR John F /f0//a B y Z Q A TTORNE r 3 Patented on. as, was.

nirn rare JOHN P. KOLLA, OI HOLLAND, MICHIGAN, ASSIGNOR T0 EOLLANID FURNACE COM-- PANY, .GFfI-IOLLAND, MICHIGAN.

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Application filed Gctober 24, 1927; Serial No. 228.2%?

This invention relates particularly to an improved radiator for warm air furnaces.

The main object-of the invention is to provide an improved construction of radiator, preferably made in two pieces of casting, in which the equal distribution and circulation of the combustion gases are insured, and consequently even distribution and complete utilization of the heat accomplished and an equalized expansion and contraction of the casting assured which is of decided advan tage in maintenance.

A consequent further object is to provide such a casting which will not be subject to undue strains from the heat.

Objects pertaining to details and economies of my invention will definitely appear from the description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification. The invention is clearly defined and pointed out in the claims.

A structure which is a preferred embodiment of my invention is full illustrated in the accompanying drawing forming a part of this specification, in which:

Fig. 1 is a detail vertical central sectional elevation through the upper part of a warm air furnace with one of my improved radiators embodied.

Fig. 2 is adetail inverted plan view of the upper half of the radiator casting taken on section line 22 of Fig. 1, which section line coincides with the joint between the top and bottom sections of the said radiator.

Fig. 3 is a detail sectional elevation view on line 3-3 of Figs. 1 and 2 showing details of construction and the form of the passages for the combustion gases.

Fig. 4 is a similar sectional view on line 44: of Fig. 2 showing the form of the exit to the smoke flue from the radiator.

The parts will be identified by their numerals of reference which are the same in all the views.

1 is the casing of an ordinary furnace. 2 is the upper part of the casting of the combustion chamber. .3 is the lower half of my improved radiator provided with a central annular flange 31 for joining to the top opening of the combustion chamber 2 as indicated in Fig. 1. It has an annular trough forming the lower half of the radiator passage suitably flanged to receive the top part.

- The top part 30 of the radiator comprises a central dome par-t 32 from which leads passage 33 divided by the downwardly deflected rib-like fold portion 34 in the top casting 30 into two parts 35. The passages 35 35 are semi-circular in form in spaced relation to the central dome part 32 and lead to apoint' diametrically opposite the passage 33 where they merge into the smoke outlet 36. The smoke outlet is divided by depression fold 37 similar to the depression fold 33 which divides the passage 33 at the receiving ends.

This insures an exact division of the gases of combustion and an even circulation through the parts of the radiator and conse quent even distribution of the heat, and, thus, the full distribution of the heat over the on tire radiator, thus utilizing its full capacity. Opposite the passage 33 is a vent passage 38 closed by an inclined trap door 381. In the event of explosion this opens and relieves all pressure on the joint.

delivery by radiation and conduction of the heat therefrom. 1

The deflector 37 at the discharge might be omitted and very good results secured although this enhances the efliciency of the structure a considerable percent.

I desire to state that I Wish to claim my invention broadly and also specifically .as pointed out in the appended claims.

Having thus described my invention what I claim as new and desire to secure by Letters Patent is:

1. In a furnace structure, a radiator comprising a bottom casting with central intake and a top casting, the bottom casting being flanged to connect to the top of the combustion chamber of a furnace, the top casting being formed with a central dome and connected semicircular passages leading around the same to the smoke flue, said upper casting having an integral dividing rib depression at the center of the discharge passage from the dome to the semi-circular passages and the discharge passage to the smoke pipe.

2. In a furnace structure a radiator comprising a bottom casting with central intake and a top casting, the bottom casting being flanged to connect to the top of the combus tin chamber of a furnace, the top casting being formed With a central dome and connected semi-circular passages leading around the same to the discharge passage to the smoke flue, said upper casting having an integral dividing rib depression at the center of the discharge passage from the dome to the semi- V circular passages.

chamber of a furnace, the top casting being formed with a central dome andconnected semi-circular passages leading around the same to the discharge passage to the smoke flue, said upper casting having an integral dividing rib depression at the center of the discharge passage from the dome, and a vent passage opposite the passage from the dome part With inclined trap door at the end.

Ini Witness whereof I have hereunto set my han JOHN P. KOLLA. 

